[lldb\utils] Place lldb-repro in a per-configuration directory to support multi-configuration generators
Summary: Currently, lldb-repro is placed in the wrong location for multi-configuration generators. For example, in the case of VS, it is placed in a directory $(Configuration) instead of in each of Debug, Release, etc.
Reviewed By: JDevlieghere
Subscribers: mgorny, lldb-commits, asmith
Differential Revision: https://reviews.llvm.org/D74148